<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>鸿蒙logo效果图</title>
    <style>
        .container{
            width: 200px;
            height: 200px;
            background: black;
            display: flex;
            justify-content: center;
            align-items: center
        }
        .box{
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .inner{
            height: 90px;
            width: 90px;
            border-radius: 50%;
            background: black;
            border: 12px solid white;
            filter: drop-shadow(0px 4px 5px white);
            animation:myMove 1s ease-out;
        }
        @keyframes  myMove{
            0%{
                height: 20px;
                width:  20px;
            }
            50%{
                height: 40px;
                width: 40px;
            }
            100%{
                height: 90px;
                width: 90px;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div  class="box">
           <div class="inner">
           </div>
         </div>
    </div>
</body>
</html>